When inequality gets too extreme, then it becomes useless for growth, and it can even become bad because it tends to lead to high perpetuation of inequality over time and low mobility.
Interpretation
Extreme inequality can hinder growth and perpetuate further inequality, limiting social mobility.
This quote by Thomas Piketty illustrates the detrimental impact of severe inequality on economic growth and social mobility. When wealth and resources are disproportionately distributed, it not only stifles development but also creates a cycle that makes it increasingly difficult for individuals to improve their socio-economic status, leading to a stagnation of opportunity and potential.
In practice
In a keynote speech on economic policy, consider using this quote to highlight the risks of ignoring inequality.
Contrary to a tenacious myth, France is not owned by California pension funds or the Bank of China, any more than the United States belongs to Japanese and German investors. The fear of getting into such a predicament is so strong today that fantasy often outstrips reality. The reality is that inequality with respect to capital is a far greater domestic issue than it is an international one.
The main force pushing toward reduction in inequality has always been the diffusion of knowledge and the diffusion of education.
Over a long period of time, the main force in favor of greater equality has been the diffusion of knowledge and skills.
There is one great advantage to being an academic economist in France: here, economists are not highly respected in the academic and intellectual world or by political and financial elites. Hence they must set aside their contempt for other disciplines and their absurd claim to greater scientific legitimacy, despite the fact that they know almost nothing about anything.
When the rate of return on capital exceeds the rate of growth of output and income, as it did in the nineteenth century and seems quite likely to do again in the twenty-first, capitalism automatically generates arbitrary and unsustainable inequalities that radically undermine the meritocratic values on which democratic societies are based.
Having a decent share of the national wealth for the middle class is not bad for growth. It is actually useful both for equity and efficiency reasons.
There should be no unemployment. There is large percentage of labor now which cannot make a living because wages are not high enough. That is industry's 2nd job. 1st job is to make good product. 2nd pay a good wage.
With the exception of the instinct of self-preservation, the propensity for emulation is probably the strongest and most alert and persistent of the economic motives proper.
Prosperous farmers mean more employment, more prosperity for the workers and the business men of every industrial area in the whole country.
It is a [disputed] question, whether the circulation of paper, rather than of specie [gold and silver coin], is a good or an evil I believe it to be one of those cases where mercantile clamor will bear down reason, until it is corrected by ruin.
The Fed was largely responsible for converting what might have been a garden-variety recession, although perhaps a fairly severe one, into a major catastrophe. Instead of using its powers to offset the depression, it presided over a decline in the quantity of money by one-third from 1929 to 1933 ... Far from the depression being a failure of the free-enterprise system, it was a tragic failure of government.
We cannot live without trade. A society can neither advance nor improve without excess of disposable income. This excess can only be amassed through the production of goods and services necessary or attractive to the mass. A financial system which allows this leads to inequality; one that does not leads to mass starvation.
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